action telnyx_get_authentication_provider { label: "Retrieve an authentication provider" description: "Retrieves the details of an existing authentication provider." provider: telnyx method: GET path: "/authentication_providers/{id}" encoding: json input: { type: "object" properties: { id: { type: "string" } } required: ["id"] additionalProperties: false } output: { type: "object" additionalProperties: true } }